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Re: [aspectj-users] @DeclareParents disallowed
I think the semantic of @DeclareParent usage has changed. Please consult the last version of Developer Notebook. 

./alex
--
.w( the_mindstorm )p.

#: Raoul Pierre changed the world a bit at a time by saying on  11/18/2005 12:08 PM :#

Hello,
I'm trying to set a DeclareParents annotation with an around advice (see code below) and I get this error: 

The annotation @DeclareParents is disallowed for this location

Is it possible to do such a thing? Or what did I do wrong?

I use Eclipse and AJDT under Windows XP

Regards

Pierre

package com.uwyn.ecalendar.aop;

import java.util.Locale;

import javax.servlet.http.HttpSession;

import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.DeclareParents;

import com.uwyn.rife.engine.ElementContext;
import com.uwyn.rife.engine.ElementSupport;

@Aspect
public class Localization { public interface Localized { public static final String PARAM_SESSION_LANGUAGE = "sessionLanguage"; // $NON-NLS-1$ public static final String PARAM_SESSION_COUNTRY = "sessionCountry"; // $NON-NLS-1$ 
        public Void setLocale(Locale locale);
        public Locale getLocale();
    };

    @DeclareParents("com.uwyn.rife.engine.ElementSupport")
    class LocalizedImpl implements Localized {
private static final String EMPTY_STRING = ""; // $NON-NLS-1$ 

        private Locale locale = null;
        private HttpSession session = null;
        {
            this.session = ElementContext.getActiveElement()
                                    .getHttpServletRequest()
                                    .getSession(false);
            if (this.session != null) {
String sessionLanguage = (String) this.session.getAttribute(PARAM_SESSION_LANGUAGE); if ((sessionLanguage != null) && (! sessionLanguage.equals(EMPTY_STRING))) { String sessionCountry = (String) this.session.getAttribute(PARAM_SESSION_COUNTRY); this.locale = new Locale(sessionLanguage, sessionCountry); 
                }
            }
        }
public Void setLocale (Locale locale) { 
            this.locale = locale;
            if (this.session != null) {
                if (this.locale != null) {
this.session.setAttribute(PARAM_SESSION_LANGUAGE, locale.getLanguage()); this.session.setAttribute(PARAM_SESSION_COUNTRY, locale.getCountry()); 
                }
                else {
                    this.session.removeAttribute(PARAM_SESSION_LANGUAGE);
                    this.session.removeAttribute(PARAM_SESSION_COUNTRY);
                }
            }
            else {
                if (locale != null) {
                    this.session = ElementContext.getActiveElement()
                                            .getHttpServletRequest()
                                            .getSession(true);
this.session.setAttribute(PARAM_SESSION_LANGUAGE, locale.getLanguage()); this.session.setAttribute(PARAM_SESSION_COUNTRY, locale.getCountry()); 
                }
            }
        }

        public Locale getLocale() {
            Locale userLocale = this.locale;
            if (userLocale == null) {
userLocale = ElementContext.getActiveElement().getRequestLocale(); 
            }
            return userLocale;
        }
    }
@Around("execution(public static String com.uwyn.rife.config.RifeConfig.Tools.getDefaultLanguage())" + 
            " && this(localized)")
public Object getDefaultLanguage(ProceedingJoinPoint thisJoinPoint, Localized localized) 
    throws Throwable{
        return localized.getLocale().getLanguage();
    }

}



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